html, body {
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
}

.container{
    width: 30%;
    /*text-align: center;*/
    overflow:hidden;
    /*position:fixed;*/
    /*bottom: 30%;*/
    /*left: 34%;*/
    z-index: 3;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate( -50%, -50% );
}
/*.ui.input{*/
    /*padding-right: 10%;*/
    /*padding-left: 10%;*/
    /*margin-right: auto;*/
    /*margin-left: auto;*/
/*}*/